20621216

素因数分解:

$2^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{8369}}^1$

素因数の和:8397

約数の個数: 48

約数和(自身を含む): 50621760

約数和(自身を除く): 30000544

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 77, 88, 112, 154, 176, 224, 308, 352, 616, 1232, 2464, 8369, 16738, 33476, 58583, 66952, 92059, 117166, 133904, 184118, 234332, 267808, 368236, 468664, 644413, 736472, 937328, 1288826, 1472944, 1874656, 2577652, 2945888, 5155304, 10310608, 20621216]

約数ペア:

[(1, 20621216), (2, 10310608), (4, 5155304), (7, 2945888), (8, 2577652), (11, 1874656), (14, 1472944), (16, 1288826), (22, 937328), (28, 736472), (32, 644413), (44, 468664), (56, 368236), (77, 267808), (88, 234332), (112, 184118), (154, 133904), (176, 117166), (224, 92059), (308, 66952), (352, 58583), (616, 33476), (1232, 16738), (2464, 8369)]